Long Range Energy-energy Correlator at the LHC
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arXiv
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| Hauptverfasser: | , , |
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| Format: | Preprint |
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2024
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| _version_ | 1866913481744187392 |
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| author | Guo, Yuxun Liu, Xiaohui Yuan, Feng |
| author_facet | Guo, Yuxun Liu, Xiaohui Yuan, Feng |
| contents | We study the forward-backward azimuthal angular correlations of hadrons in association with multi-particle production in the central rapidity region in proton-proton collisions at the LHC. We apply the nucleon energy-energy correlator framework, where the spinning gluon distribution introduces a nontrivial $\cos(2ϕ)$ asymmetries. We will demonstrate that the fundamental helicity structure of QCD amplitudes predicts a unique power counting rule: $\cos(2ϕ)$ asymmetry starts at ${O}(α_s^2)$ order for dijet, ${O}(α_s)$ for three jet and ${O}(1)$ for four (and more) jet productions. Our results will help us to understand the long standing puzzle of nearside ridge behavior observed in high multiplicity events of $pp$ collisions at the LHC. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2408_14693 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | Long Range Energy-energy Correlator at the LHC Guo, Yuxun Liu, Xiaohui Yuan, Feng High Energy Physics - Phenomenology High Energy Physics - Experiment Nuclear Experiment Nuclear Theory We study the forward-backward azimuthal angular correlations of hadrons in association with multi-particle production in the central rapidity region in proton-proton collisions at the LHC. We apply the nucleon energy-energy correlator framework, where the spinning gluon distribution introduces a nontrivial $\cos(2ϕ)$ asymmetries. We will demonstrate that the fundamental helicity structure of QCD amplitudes predicts a unique power counting rule: $\cos(2ϕ)$ asymmetry starts at ${O}(α_s^2)$ order for dijet, ${O}(α_s)$ for three jet and ${O}(1)$ for four (and more) jet productions. Our results will help us to understand the long standing puzzle of nearside ridge behavior observed in high multiplicity events of $pp$ collisions at the LHC. |
| title | Long Range Energy-energy Correlator at the LHC |
| topic | High Energy Physics - Phenomenology High Energy Physics - Experiment Nuclear Experiment Nuclear Theory |
| url | https://arxiv.org/abs/2408.14693 |